[_] Sun X2100 - for a webserver
Jan Grant
jan.grant at bristol.ac.uk
Thu Nov 2 10:34:33 GMT 2006
On Thu, 2 Nov 2006, Oliver Humpage wrote:
> on 2/11/06 09:35, Jan Grant at jan.grant at bristol.ac.uk wrote:
>
> > That sounds so spectacular that it makes me think something's broken.
> > The OS shouldn't get in the way of straight-line computation that much -
> > what were the benchmarks, out of interest?
>
> I'd have thought the OS played a bigger role when it comes to dual processor
> (or even dual core) boxes. OTOH, I'd have expected Solaris to fare better...
The task description was "number crunching". To me, that says one work
thread per CPU (barring I/O); the OS should only intrude if there's
cross-thread synchronisation.
--
jan grant, ISYS, University of Bristol. http://www.bris.ac.uk/
Tel +44 (0)117 3317661 http://ioctl.org/jan/
It's a sad fact that the word "semantics" seems to have lost all meaning.
> on 2/11/06 09:35, Jan Grant at jan.grant at bristol.ac.uk wrote:
>
> > That sounds so spectacular that it makes me think something's broken.
> > The OS shouldn't get in the way of straight-line computation that much -
> > what were the benchmarks, out of interest?
>
> I'd have thought the OS played a bigger role when it comes to dual processor
> (or even dual core) boxes. OTOH, I'd have expected Solaris to fare better...
The task description was "number crunching". To me, that says one work
thread per CPU (barring I/O); the OS should only intrude if there's
cross-thread synchronisation.
--
jan grant, ISYS, University of Bristol. http://www.bris.ac.uk/
Tel +44 (0)117 3317661 http://ioctl.org/jan/
It's a sad fact that the word "semantics" seems to have lost all meaning.